Fixed an issue where the 2.0.2 migration broke the original _003_ migration

SessionMessagingKit/Database/Migrations/_001_InitialSetupMigration.swift

@@ -175,7 +175,7 @@ enum _001_InitialSetupMigration: Migration {
                 .notNull()
         }
         
-        try db.create(table: GroupMember.self) { t in
+        try db.create(table: _006_FixHiddenModAdminSupport.PreMigrationGroupMember.self) { t in
             // Note: Since we don't know whether this will be stored against a 'ClosedGroup' or
             // an 'OpenGroup' we add the foreign key constraint against the thread itself (which
             // shares the same 'id' as the 'groupId') so we can cascade delete automatically

SessionMessagingKit/Database/Migrations/_003_YDBToGRDBMigration.swift

@@ -647,11 +647,10 @@ enum _003_YDBToGRDBMigration: Migration {
                     }
                     
                     try groupModel.groupMemberIds.forEach { memberId in
-                        try GroupMember(
+                        try _006_FixHiddenModAdminSupport.PreMigrationGroupMember(
                             groupId: threadId,
                             profileId: memberId,
-                            role: .standard,
-                            isHidden: false
+                            role: .standard
                         ).insert(db)
                         
                         if !validProfileIds.contains(memberId) {
@@ -660,11 +659,10 @@ enum _003_YDBToGRDBMigration: Migration {
                     }
                     
                     try groupModel.groupAdminIds.forEach { adminId in
-                        try GroupMember(
+                        try _006_FixHiddenModAdminSupport.PreMigrationGroupMember(
                             groupId: threadId,
                             profileId: adminId,
-                            role: .admin,
-                            isHidden: false
+                            role: .admin
                         ).insert(db)
                         
                         if !validProfileIds.contains(adminId) {
@@ -673,11 +671,10 @@ enum _003_YDBToGRDBMigration: Migration {
                     }
                     
                     try (closedGroupZombieMemberIds[legacyThread.uniqueId] ?? []).forEach { zombieId in
-                        try GroupMember(
+                        try _006_FixHiddenModAdminSupport.PreMigrationGroupMember(
                             groupId: threadId,
                             profileId: zombieId,
-                            role: .zombie,
-                            isHidden: false
+                            role: .zombie
                         ).insert(db)
                         
                         if !validProfileIds.contains(zombieId) {

SessionMessagingKit/Database/Migrations/_006_FixHiddenModAdminSupport.swift

@@ -28,3 +28,41 @@ enum _006_FixHiddenModAdminSupport: Migration {
         Storage.update(progress: 1, for: self, in: target) // In case this is the last migration
     }
 }
+
+// MARK: - Pre-Migration Types
+
+extension _006_FixHiddenModAdminSupport {
+    internal struct PreMigrationGroupMember: Codable, PersistableRecord, TableRecord, ColumnExpressible {
+        public static var databaseTableName: String { "groupMember" }
+        
+        public typealias Columns = CodingKeys
+        public enum CodingKeys: String, CodingKey, ColumnExpression {
+            case groupId
+            case profileId
+            case role
+        }
+        
+        public enum Role: Int, Codable, DatabaseValueConvertible {
+            case standard
+            case zombie
+            case moderator
+            case admin
+        }
+
+        public let groupId: String
+        public let profileId: String
+        public let role: Role
+        
+        // MARK: - Initialization
+        
+        public init(
+            groupId: String,
+            profileId: String,
+            role: Role
+        ) {
+            self.groupId = groupId
+            self.profileId = profileId
+            self.role = role
+        }
+    }
+}